PMID- 29244885 OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - Int J Periodontics Restorative Dent JT - International Journal of Periodontics & Restorative Dentistry IS - 1945-3388 (Electronic) IS - 0198-7569 (Print) IP - 5 VI - 38 PST - ppublish DP - 2018 PG - 711-717 LA - en TI - Effect of Fiber Post Cementation Timing on the Bond Strength of Resin Cements in Epoxy Resin-Obturated Canals LID - 10.11607/prd.2649 [doi] FAU - Berti, Luiza Salles Alves AU - Berti L FAU - Pereira, Leandro Augusto Pinto AU - Pereira L FAU - Pecorari, Vanessa Galego Arias AU - Pecorari V FAU - Amaral, Flávia Lucisano Botelho AU - Amaral F FAU - Turssi, Cecília Pedroso AU - Turssi C FAU - Basting, Roberta Tarkany AU - Basting R FAU - França, Fabiana Mantovani Gomes AU - França F CN - AB - This study evaluated the influence of timing after endodontic treatment and type of resin cement used on the bond strength of fiber posts to epoxy resin-obturated canals. A total of 80 bovine incisor roots were divided into four groups (n = 20). Glass fiber posts were cemented at two different times, immediately or 7 days after endodontic treatment, using either a dual-curing resin cement (RelyX ARC, 3M ESPE) or a self-adhesive resin cement (RelyX U200, 3M ESPE). Following post cementation, the samples were cross-sectioned into slices containing root dentin, cement, and fiber post at the cervical, mid, and apical root thirds. The push-out test was performed on a universal testing machine. Three-way analysis of variance for randomized blocks showed no significant effect within the triple interaction (P = .394) or between the double interactions cement-timing (P = .395), cement-root thirds (P = .996), and timing-root thirds (P = .331). The main factor cement revealed a significant effect, showing that regardless of the timing and root third, RelyX ARC provided significantly higher bond strength values than U200. Regardless of root third and timing, the dual-curing resin cement showed higher bond strength to root dentin when the canals were filled with epoxy resin-based cement. AID - 854334